DIN EN 13771-1-2017 Compressors and condensing units for refrigeration - Performance testing and test methods - Part 1 Refrigerant compressors German version EN 13771-1 2016《制冷压缩机和.pdf

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1、April 2017 English price group 17No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.140; 27.200!%dTv“2654983www.din

2、.deDIN EN 13771-1Compressors and condensing units for refrigeration Performance testing and test methods Part 1: Refrigerant compressors;English version EN 137711:2016,English translation of DIN EN 13771-1:2017-04KltemittelVerdichter und Verflssigungsstze fr die Klteanwendung Leistungsprfung und Prf

3、verfahren Teil 1: KltemittelVerdichter;Englische Fassung EN 137711:2016,Englische bersetzung von DIN EN 13771-1:2017-04Compresseurs pour fluides frigorignes et units de condensation pour la rfrigration Essais de performances et mthodes dessai Partie 1: Compresseurs pour fluides frigognes;Version ang

4、laise EN 137711:2016,Traduction anglaise de DIN EN 13771-1:2017-04SupersedesDIN EN 137711:200308www.beuth.deDocument comprises 41 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.04.17 DIN EN 13771-1:2017-04 2 A comma is used as

5、 the decimal marker. National foreword This document (EN 13771-1:2016) has been prepared by Technical Committee CEN/TC 113 “Heat pumps and air conditioning units” (Secretariat: AENOR, Spain). The responsible German body involved in its preparation was DIN-Normenausschuss Kltetechnik (DIN Standards C

6、ommittee Refrigeration Technology), Working Committee NA 044-00-14 AA “Refrigerant compressors”. Amendments This standard differs from DIN EN 13771-1:2003-08 as follows: a) Clause 4 “Uncertainty of measurement and test conditions” has been included; b) the list of measuring devices has been deleted;

7、 c) two-stage and economized compressors have been included; d) transcritical application has been included; e) test requirements for inverter driven compressors have been included; f) cyclic capacity control has been included; g) part load conditions according to mandate M/488 have been included. P

8、revious editions DIN 8977: 1973-01 DIN EN 13771-1: 2003-08 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13771-1 November 2016 ICS 23.140; 27.200 Supersedes EN 13771-1:2003 English Version Compressors and condensing units for refrigeration - Performance testing and test methods - Part 1: Refr

9、igerant compressors Compresseurs pour fluides frigorignes et units de condensation pour la rfrigration - Essais de performances et mthodes dessai - Partie 1: Compresseurs pour fluides frigognes Kltemittel-Verdichter und Verflssigungsstze fr die Klteanwendung - Leistungsprfung und Prfverfahren - Teil

10、 1: Kltemittel-Verdichter This European Standard was approved by CEN on 13 August 2016. This European Standard was corrected and reissued by the CEN-CENELEC Management Centre on 23 November 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions

11、 for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in t

12、hree official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards

13、bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia

14、, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved wor

15、ldwide for CEN national Members. Ref. No. EN 13771-1:2016 E EN 13771-1:2016 (E) 2 Contents Page European foreword . 4 1 Scope 5 2 Normative references 5 3 Terms, definitions and symbols . 5 3.1 Terms and definitions . 5 3.2 Symbols . 7 3.3 Refrigerant circuit state points 9 4 Uncertainty of measurem

16、ent and test conditions 10 4.1 Uncertainty of performance data . 10 4.2 Uncertainty of measurement . 10 4.3 Test conditions 11 5 General requirements 13 5.1 Calculation methods 13 5.1.1 Principle 13 5.1.2 Specific enthalpy 13 5.1.3 Refrigerant mass flow. 13 5.1.4 Power absorbed 13 5.1.5 Basic formul

17、as . 13 5.2 Requirements for the selection of test method . 15 5.2.1 General . 15 5.2.2 Second concurrent test 15 5.3 Test period 15 5.3.1 General . 15 5.3.2 Steady-state conditions 15 5.3.3 Recording of measured data 16 5.4 Pressure and temperature measuring points 16 5.5 Oil circulation 16 5.6 Fra

18、ctionation . 16 5.7 Calibration of calorimeters for methods A, B and C. 16 5.7.1 Heat leakage . 16 5.7.2 Reference temperature 17 5.7.3 Calibration procedure 17 5.8 Source of refrigerant data . 17 6 Test methods . 17 6.1 General . 17 6.2 List of test methods . 17 6.2.1 Calorimetric methods . 17 6.2.

19、2 Flow meter methods . 18 6.3 Method A: Secondary fluid calorimeter on the suction side . 18 6.3.1 Description . 18 6.3.2 Calibration 21 6.3.3 Test procedure 21 6.3.4 Requirements 21 6.3.5 Additional information 21 6.4 Determination of refrigerant mass flow 21 DIN EN 13771-1:2017-04 EN 13771-1:2016

20、(E) 3 6.5 Method B: Dry system refrigerant calorimeter on the suction side . 21 6.5.1 Description 21 6.5.2 Calibration . 25 6.5.3 Test procedure 25 6.5.4 Requirements . 25 6.5.5 Additional information . 25 6.5.6 Determination of refrigerant mass flow 25 6.6 Method C: Water-cooled condenser/gas coole

21、r on the discharge side . 26 6.6.1 Description 26 6.6.2 Calibration . 28 6.6.3 Test procedure 28 6.6.4 Requirements . 28 6.6.5 Additional information . 28 6.6.6 Determination of refrigerant mass flow 28 6.7 Method D: Refrigerant gas flow meter 28 6.7.1 Description 28 6.7.2 Requirements . 31 6.7.3 Ad

22、ditional information . 31 6.7.4 Determination of refrigerant mass flow 31 6.8 Method E: Refrigerant flow meter in the liquid line 31 6.8.1 General . 31 6.8.2 Description 31 6.8.3 Test procedure 32 6.8.4 Requirements . 32 6.8.5 Additional information . 32 6.8.6 Determination of the refrigerant and oi

23、l mass flow 33 7 Determination of the power absorbed by the compressor . 33 7.1 Measurement . 33 7.1.1 General . 33 7.1.2 Measurement for externally driven compressors 33 7.1.3 Measurement for motor compressors 33 7.2 Calculation. 33 8 Test report 33 8.1 General . 33 8.2 Basic data . 34 8.3 Addition

24、al data 34 8.4 Test results 34 Annex A (normative) Conversion of measured performance data to specified test conditions for compressors with intermediate pressure port 36 Bibliography . 39 DIN EN 13771-1:2017-04 EN 13771-1:2016 (E) 4 European foreword This document (EN 13771-1:2016) has been prepare

25、d by Technical Committee CEN/TC 113 “Heat pumps and air conditioning units”, the secretariat of which is held by AENOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2017, and conflicting na

26、tional standards shall be withdrawn at the latest by May 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersede

27、s EN 13771-1:2003. The main changes with respect to the previous edition are listed below: a) addition of the new Clause 4 “Uncertainty of measurement and test conditions”; b) deletion of the list of measuring devices; c) addition of two-stage and economized compressors; d) addition of transcritical

28、 application; e) addition of test requirements for inverter driven compressors; f) addition of cyclic capacity control; g) addition of the part load conditions according to mandate M/488. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Tr

29、ade Association. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Maced

30、onia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 13771-1:2017-04 EN 13771-1:2016 (E) 5 1 Scope This European Sta

31、ndard specifies performance test methods for refrigerant compressors. These methods provide sufficiently accurate results for the determination of the refrigerating capacity, power absorbed, refrigerant mass flow, isentropic efficiency and the coefficient of performance. This European Standard appli

32、es only to performance tests where the equipment for testing is available. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated ref

33、erences, the latest edition of the referenced document (including any amendments) applies. EN 378-2, Refrigerating systems and heat pumps Safety and environmental requirements Part 2: Design, construction, testing, marking and documentation 3 Terms, definitions and symbols For the purposes of this d

34、ocument, the following terms and definitions apply. 3.1 Terms and definitions 3.1.1 refrigerating capacity Q product of the mass flow of refrigerant at the compressor inlet port and the difference between the specific enthalpy of the refrigerant at the compressor inlet port and the specific enthalpy

35、 of fluid entering the evaporator expansion device 3.1.2 subcooling difference between the bubble point temperature of the refrigerant corresponding to the compressor discharge pressure and the temperature of the liquid refrigerant below the bubble point 3.1.3 suction gas superheat difference betwee

36、n the dew point temperature of the refrigerant corresponding to the compressor suction pressure and the suction gas temperature of the refrigerant at the compressor inlet 3.1.4 power absorbed P power demand to drive the compressor Note 1 to entry: The determination of the power absorbed is specified

37、 under Clause 7. 3.1.5 coefficient of performance COPRratio of the refrigerating capacity to the power absorbed Note 1 to entry: Both the above are at the specified test condition. DIN EN 13771-1:2017-04 EN 13771-1:2016 (E) 6 3.1.6 subcritical operation operating condition with discharge pressure le

38、vel below the critical pressure 3.1.7 transcritical operation operating condition with discharge pressure level above the critical pressure 3.1.8 part load operation for compressors with capacity control mechanism, part load is interpreted as operation with active capacity control at reduced capacit

39、y Note 1 to entry: On/off cycling of the compressor motor is not considered as capacity control. 3.1.9 fluid refrigerant liquid, gas or vapour including the state of appearance close to and above the critical pressure 3.1.10 evaporating temperature dew temperature corresponding to the suction pressu

40、re of the compressor 3.1.11 condensing temperature dew temperature corresponding to the discharge pressure of the compressor 3.1.12 refrigerant mass flow (m) refrigerant mass flow at compressor port 3.1.13 volumetric efficiency (v) ratio of the actual volume rate of flow under compressor inlet condi

41、tions, at the requirements specified in 4.3, to the displacement of the compressor Note 1 to entry: Ports, see Table 2, index 1, 2 and 7. 3.1.14 isentropic efficiency (i) ratio of total isentropic compression power to the power absorbed Note 1 to entry: Total isentropic compression power is the sum

42、of individual product of mass flow times the isentropic change in enthalpy across the corresponding compression stage. 3.1.15 oil circulation rate (xoil) ratio of the measured oil mass flow to the mass flow of the circulating oil/refrigerant mixture at the inlet of the compressor Note 1 to entry: Oi

43、l circulation rate may differ at other compressor ports. DIN EN 13771-1:2017-04 EN 13771-1:2016 (E) 7 3.2 Symbols For the purposes of this document, the symbols of Table 1 apply. Table 1 Symbols Symbol Designation SI unit A Heat transfer surface M2c Specific heat capacity of heating and cooling liqu

44、id J/(kg K) f Electrical frequency Hz F Heat leakage factor W/K FmMass flow ratio - h Specific enthalpy J/kg hi12Specific enthalpy of refrigerant gas at the compressor outlet (2) having the same entropy as the refrigerant gas at the compressor inlet (1) for calculation of the isentropic efficiency (

45、specified test conditions) J/kg hi72Specific enthalpy of refrigerant gas at the compressor outlet (2) having the same entropy as the refrigerant gas at the compressor intermediate pressure port (7) for calculation of the isentropic efficiency (specified test conditions) J/kg n Compressor speed s-1P

46、Power absorbed W p Absolute pressure Pa maRefrigerant mass flow as determined by the test kg/s m Refrigerant mass flow at the specified test conditions kg/s mfMass flow of heating or cooling liquid kg/s moilOil mass flow kg/s mxMass flow of liquid refrigerant oil mixture kg/s V Refrigerant volume fl

47、ow m3/s VxVolume flow of refrigerant oil mixture m3/s T Absolute temperature K TecoDifference between fluid outlet of economizer and bubble temperature corresponding to intermediate pressure K t Temperature C tcalMean surface temperature of the calorimeter C tbBubble point temperature of the refrige

48、rant C tbsBubble point temperature of the secondary fluid C DIN EN 13771-1:2017-04 EN 13771-1:2016 (E) 8 Symbol Designation SI unit txReference temperature C ts1Inlet temperature of heating or cooling liquid C ts2Outlet temperature of heating or cooling liquid C u Coefficient of heat transmission W/

49、(m2K) U Electrical voltage V VswTheoretical compressor displacement at declared speed m3/s xoilOil circulation in the refrigerating system, expressed in mass of oil per mass of mixture kg/kg COPRCoefficient of performance iIsentropic efficiency vVolumetric efficiency v Specific volume m3/kg aDensity of refrigerant corresponding to pressure and temperature at which the flow rate is measured kg/m3QHeat input to the calorimeter